Ray tracing is turned on in render globals and refractive index is at 1.5 but I may know the problem. i did not model the wine glass using curves. I did it using Nurbs and converted them to pollys to combine them and then to SubDs to detail a little. Does this mean that it will be difficult to render correctly?

If you modeled it using NURBS, then you had to have drawn a curve to make that wineglass, right? Its like the oldest 3D trick in the book - revolving a profile curve to make a NURBS or poly wineglass. I figured thats the kind of tutorial you followed to make yours.

You can either make the curves in Illustrator and import them or you can use the CV curve tool in Maya to draw a profile curve like the one in the pic I made.

I have no idea why the refractions aren't working for you. Probably something silly. Try creating a nurbs sphere and applying your texture to is and see if it renders properly.

And the resulting render, using a HDR image for the environment, rendered in mental ray with final gathering only (no GI or caustics)

Its only a quick 10 min model, set up and render demo so you might be best off playing with the material settings, I also added a sampler info node connected to a ramp to control the reflectivity (so it gets more reflective as the material moves away from the camera)

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